Japan's chief cabinet secretary Yukio Edano says it is possible that the radioactive cores of the two damaged Fukushima reactors have already started to melt. He said: "We believe that there is a possibility that meltdown has occurred but it is inside the reactor so we can't see.
"However, we are acting, assuming that a meltdown has occurred and with reactor number 3, we are also assuming the possibility of a meltdown as we carry out measures."Officials from Tokyo Electric Power (TEPCO), the plant's operator, say that pressure is rising inside reactor No. 3, after its emergency cooling system failed to operate. A similar problem had led to a blast at the plant's reactor No. 1 on Saturday.
The officials say that after the blast, the plant lost the emergency cooling system at a second reactor and it started releasing air from the reactor
About 170000 people have been evacuated from the area around the plant, to prevent exposure to harmful radiation. Read More